Trait nom::lib::std::ops::Sub1.0.0[][src]

#[lang = "sub"]
pub trait Sub<Rhs = Self> {
    type Output;
    #[must_use]
    pub fn sub(self, rhs: Rhs) -> Self::Output;
}
[]

The subtraction operator -.

Note that Rhs is Self by default, but this is not mandatory. For example, std::time::SystemTime implements Sub<Duration>, which permits operations of the form SystemTime = SystemTime - Duration.

Examples

Subtractable points

use std::ops::Sub;

#[derive(Debug, Copy, Clone, PartialEq)]
struct Point {
    x: i32,
    y: i32,
}

impl Sub for Point {
    type Output = Self;

    fn sub(self, other: Self) -> Self::Output {
        Self {
            x: self.x - other.x,
            y: self.y - other.y,
        }
    }
}

assert_eq!(Point { x: 3, y: 3 } - Point { x: 2, y: 3 },
           Point { x: 1, y: 0 });

Implementing Sub with generics

Here is an example of the same Point struct implementing the Sub trait using generics.

use std::ops::Sub;

#[derive(Debug, PartialEq)]
struct Point<T> {
    x: T,
    y: T,
}

// Notice that the implementation uses the associated type `Output`.
impl<T: Sub<Output = T>> Sub for Point<T> {
    type Output = Self;

    fn sub(self, other: Self) -> Self::Output {
        Point {
            x: self.x - other.x,
            y: self.y - other.y,
        }
    }
}

assert_eq!(Point { x: 2, y: 3 } - Point { x: 1, y: 0 },
           Point { x: 1, y: 3 });

Associated Types

type Output[src][]

The resulting type after applying the - operator.

Required methods

#[must_use]
pub fn sub(self, rhs: Rhs) -> Self::Output
[src][]

Performs the - operation.

Example

assert_eq!(12 - 1, 11);

Implementations on Foreign Types

impl<'a> Sub<Wrapping<isize>> for &'a Wrapping<isize>[src][]

type Output = <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<isize>> for &'_ Wrapping<isize>[src][]

type Output = <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

impl<'a> Sub<Wrapping<u8>> for &'a Wrapping<u8>[src][]

type Output = <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

impl Sub<Wrapping<u32>> for Wrapping<u32>[src][]

type Output = Wrapping<u32>

impl<'_, '_> Sub<&'_ Wrapping<i16>> for &'_ Wrapping<i16>[src][]

type Output = <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

impl<'_> Sub<&'_ Wrapping<i64>> for Wrapping<i64>[src][]

type Output = <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

impl<'a> Sub<Wrapping<usize>> for &'a Wrapping<usize>[src][]

type Output = <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

impl<'a> Sub<Wrapping<i64>> for &'a Wrapping<i64>[src][]

type Output = <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

impl<'_> Sub<&'_ Wrapping<i32>> for Wrapping<i32>[src][]

type Output = <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

impl<'_> Sub<&'_ Wrapping<i8>> for Wrapping<i8>[src][]

type Output = <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<i128>> for &'_ Wrapping<i128>[src][]

type Output = <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u128>> for &'_ Wrapping<u128>[src][]

type Output = <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

impl Sub<Wrapping<isize>> for Wrapping<isize>[src][]

type Output = Wrapping<isize>

impl<'_> Sub<&'_ Wrapping<u32>> for Wrapping<u32>[src][]

type Output = <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<i8>> for &'_ Wrapping<i8>[src][]

type Output = <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

impl<'a> Sub<Wrapping<u16>> for &'a Wrapping<u16>[src][]

type Output = <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

impl Sub<Wrapping<u16>> for Wrapping<u16>[src][]

type Output = Wrapping<u16>

impl<'_, '_> Sub<&'_ Wrapping<u64>> for &'_ Wrapping<u64>[src][]

type Output = <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<i64>> for &'_ Wrapping<i64>[src][]

type Output = <Wrapping<i64> as Sub<Wrapping<i64>>>::Output

impl<'_> Sub<&'_ Wrapping<i16>> for Wrapping<i16>[src][]

type Output = <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

impl<'a> Sub<Wrapping<u32>> for &'a Wrapping<u32>[src][]

type Output = <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

impl<'a> Sub<Wrapping<i128>> for &'a Wrapping<i128>[src][]

type Output = <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

impl<'a> Sub<Wrapping<u64>> for &'a Wrapping<u64>[src][]

type Output = <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

impl Sub<Wrapping<i32>> for Wrapping<i32>[src][]

type Output = Wrapping<i32>

impl<'_, '_> Sub<&'_ Wrapping<u16>> for &'_ Wrapping<u16>[src][]

type Output = <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

impl Sub<Wrapping<i16>> for Wrapping<i16>[src][]

type Output = Wrapping<i16>

impl<'_, '_> Sub<&'_ Wrapping<i32>> for &'_ Wrapping<i32>[src][]

type Output = <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

impl Sub<Wrapping<i128>> for Wrapping<i128>[src][]

type Output = Wrapping<i128>

impl<'a> Sub<Wrapping<i16>> for &'a Wrapping<i16>[src][]

type Output = <Wrapping<i16> as Sub<Wrapping<i16>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u32>> for &'_ Wrapping<u32>[src][]

type Output = <Wrapping<u32> as Sub<Wrapping<u32>>>::Output

impl<'a> Sub<Wrapping<i8>> for &'a Wrapping<i8>[src][]

type Output = <Wrapping<i8> as Sub<Wrapping<i8>>>::Output

impl<'_> Sub<&'_ Wrapping<u16>> for Wrapping<u16>[src][]

type Output = <Wrapping<u16> as Sub<Wrapping<u16>>>::Output

impl<'_> Sub<&'_ Wrapping<i128>> for Wrapping<i128>[src][]

type Output = <Wrapping<i128> as Sub<Wrapping<i128>>>::Output

impl<'_> Sub<&'_ Wrapping<u8>> for Wrapping<u8>[src][]

type Output = <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

impl<'a> Sub<Wrapping<i32>> for &'a Wrapping<i32>[src][]

type Output = <Wrapping<i32> as Sub<Wrapping<i32>>>::Output

impl Sub<Wrapping<i8>> for Wrapping<i8>[src][]

type Output = Wrapping<i8>

impl<'a> Sub<Wrapping<u128>> for &'a Wrapping<u128>[src][]

type Output = <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

impl Sub<Wrapping<u8>> for Wrapping<u8>[src][]

type Output = Wrapping<u8>

impl Sub<Duration> for Duration[src][]

type Output = Duration

impl Sub<Wrapping<u64>> for Wrapping<u64>[src][]

type Output = Wrapping<u64>

impl Sub<Wrapping<u128>> for Wrapping<u128>[src][]

type Output = Wrapping<u128>

impl<'_, '_> Sub<&'_ Wrapping<usize>> for &'_ Wrapping<usize>[src][]

type Output = <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

impl Sub<Wrapping<usize>> for Wrapping<usize>[src][]

type Output = Wrapping<usize>

impl<'_> Sub<&'_ Wrapping<u128>> for Wrapping<u128>[src][]

type Output = <Wrapping<u128> as Sub<Wrapping<u128>>>::Output

impl Sub<Wrapping<i64>> for Wrapping<i64>[src][]

type Output = Wrapping<i64>

impl<'_> Sub<&'_ Wrapping<usize>> for Wrapping<usize>[src][]

type Output = <Wrapping<usize> as Sub<Wrapping<usize>>>::Output

impl<'_> Sub<&'_ Wrapping<isize>> for Wrapping<isize>[src][]

type Output = <Wrapping<isize> as Sub<Wrapping<isize>>>::Output

impl<'_> Sub<&'_ Wrapping<u64>> for Wrapping<u64>[src][]

type Output = <Wrapping<u64> as Sub<Wrapping<u64>>>::Output

impl<'_, '_> Sub<&'_ Wrapping<u8>> for &'_ Wrapping<u8>[src][]

type Output = <Wrapping<u8> as Sub<Wrapping<u8>>>::Output

Implementors

impl Sub<f32> for f32[src][+]

type Output = f32

impl Sub<f64> for f64[src][+]

type Output = f64

impl Sub<i8> for i8[src][+]

type Output = i8

impl Sub<i16> for i16[src][+]

type Output = i16

impl Sub<i32> for i32[src][+]

type Output = i32

impl Sub<i64> for i64[src][+]

type Output = i64

impl Sub<i128> for i128[src][+]

type Output = i128

impl Sub<isize> for isize[src][+]

type Output = isize

impl Sub<u8> for u8[src][+]

type Output = u8

impl Sub<u16> for u16[src][+]

type Output = u16

impl Sub<u32> for u32[src][+]

type Output = u32

impl Sub<u64> for u64[src][+]

type Output = u64

impl Sub<u128> for u128[src][+]

type Output = u128

impl Sub<usize> for usize[src][+]

type Output = usize

impl<'_> Sub<&'_ f32> for f32[src][+]

type Output = <f32 as Sub<f32>>::Output

impl<'_> Sub<&'_ f64> for f64[src][+]

type Output = <f64 as Sub<f64>>::Output

impl<'_> Sub<&'_ i8> for i8[src][+]

type Output = <i8 as Sub<i8>>::Output

impl<'_> Sub<&'_ i16> for i16[src][+]

type Output = <i16 as Sub<i16>>::Output

impl<'_> Sub<&'_ i32> for i32[src][+]

type Output = <i32 as Sub<i32>>::Output

impl<'_> Sub<&'_ i64> for i64[src][+]

type Output = <i64 as Sub<i64>>::Output

impl<'_> Sub<&'_ i128> for i128[src][+]

type Output = <i128 as Sub<i128>>::Output

impl<'_> Sub<&'_ isize> for isize[src][+]

type Output = <isize as Sub<isize>>::Output

impl<'_> Sub<&'_ u8> for u8[src][+]

type Output = <u8 as Sub<u8>>::Output

impl<'_> Sub<&'_ u16> for u16[src][+]

type Output = <u16 as Sub<u16>>::Output

impl<'_> Sub<&'_ u32> for u32[src][+]

type Output = <u32 as Sub<u32>>::Output

impl<'_> Sub<&'_ u64> for u64[src][+]

type Output = <u64 as Sub<u64>>::Output

impl<'_> Sub<&'_ u128> for u128[src][+]

type Output = <u128 as Sub<u128>>::Output

impl<'_> Sub<&'_ usize> for usize[src][+]

type Output = <usize as Sub<usize>>::Output

impl<'_, '_> Sub<&'_ f32> for &'_ f32[src][+]

type Output = <f32 as Sub<f32>>::Output

impl<'_, '_> Sub<&'_ f64> for &'_ f64[src][+]

type Output = <f64 as Sub<f64>>::Output

impl<'_, '_> Sub<&'_ i8> for &'_ i8[src][+]

type Output = <i8 as Sub<i8>>::Output

impl<'_, '_> Sub<&'_ i16> for &'_ i16[src][+]

type Output = <i16 as Sub<i16>>::Output

impl<'_, '_> Sub<&'_ i32> for &'_ i32[src][+]

type Output = <i32 as Sub<i32>>::Output

impl<'_, '_> Sub<&'_ i64> for &'_ i64[src][+]

type Output = <i64 as Sub<i64>>::Output

impl<'_, '_> Sub<&'_ i128> for &'_ i128[src][+]

type Output = <i128 as Sub<i128>>::Output

impl<'_, '_> Sub<&'_ isize> for &'_ isize[src][+]

type Output = <isize as Sub<isize>>::Output

impl<'_, '_> Sub<&'_ u8> for &'_ u8[src][+]

type Output = <u8 as Sub<u8>>::Output

impl<'_, '_> Sub<&'_ u16> for &'_ u16[src][+]

type Output = <u16 as Sub<u16>>::Output

impl<'_, '_> Sub<&'_ u32> for &'_ u32[src][+]

type Output = <u32 as Sub<u32>>::Output

impl<'_, '_> Sub<&'_ u64> for &'_ u64[src][+]

type Output = <u64 as Sub<u64>>::Output

impl<'_, '_> Sub<&'_ u128> for &'_ u128[src][+]

type Output = <u128 as Sub<u128>>::Output

impl<'_, '_> Sub<&'_ usize> for &'_ usize[src][+]

type Output = <usize as Sub<usize>>::Output

impl<'a> Sub<f32> for &'a f32[src][+]

type Output = <f32 as Sub<f32>>::Output

impl<'a> Sub<f64> for &'a f64[src][+]

type Output = <f64 as Sub<f64>>::Output

impl<'a> Sub<i8> for &'a i8[src][+]

type Output = <i8 as Sub<i8>>::Output

impl<'a> Sub<i16> for &'a i16[src][+]

type Output = <i16 as Sub<i16>>::Output

impl<'a> Sub<i32> for &'a i32[src][+]

type Output = <i32 as Sub<i32>>::Output

impl<'a> Sub<i64> for &'a i64[src][+]

type Output = <i64 as Sub<i64>>::Output

impl<'a> Sub<i128> for &'a i128[src][+]

type Output = <i128 as Sub<i128>>::Output

impl<'a> Sub<isize> for &'a isize[src][+]

type Output = <isize as Sub<isize>>::Output

impl<'a> Sub<u8> for &'a u8[src][+]

type Output = <u8 as Sub<u8>>::Output

impl<'a> Sub<u16> for &'a u16[src][+]

type Output = <u16 as Sub<u16>>::Output

impl<'a> Sub<u32> for &'a u32[src][+]

type Output = <u32 as Sub<u32>>::Output

impl<'a> Sub<u64> for &'a u64[src][+]

type Output = <u64 as Sub<u64>>::Output

impl<'a> Sub<u128> for &'a u128[src][+]

type Output = <u128 as Sub<u128>>::Output

impl<'a> Sub<usize> for &'a usize[src][+]

type Output = <usize as Sub<usize>>::Output

impl Sub<Point> for Point

impl Sub<Sides> for Sides

impl Sub<ColorMask> for ColorMask

impl Sub<Mirror> for Mirror

impl Sub<Access> for Access

impl Sub<Bind> for Bind

impl Sub<Usage> for Usage

impl Sub<DepthStencilFlags> for DepthStencilFlags

impl Sub<ModifierKey> for ModifierKey

impl Sub<PollOpt> for PollOpt

impl<T: Into<Ready>> Sub<T> for Ready

impl Sub<UnixReady> for UnixReady

impl Sub<AtFlags> for AtFlags

impl Sub<OFlag> for OFlag

impl Sub<SealFlag> for SealFlag

impl Sub<FdFlag> for FdFlag

impl Sub<SpliceFFlags> for SpliceFFlags

impl Sub<FallocateFlags> for FallocateFlags

impl Sub<ModuleInitFlags> for ModuleInitFlags

impl Sub<DeleteModuleFlags> for DeleteModuleFlags

impl Sub<MsFlags> for MsFlags

impl Sub<MntFlags> for MntFlags

impl Sub<MQ_OFlag> for MQ_OFlag

impl Sub<FdFlag> for FdFlag

impl Sub<InterfaceFlags> for InterfaceFlags

impl Sub<PollFlags> for PollFlags

impl Sub<CloneFlags> for CloneFlags

impl Sub<EpollFlags> for EpollFlags

impl Sub<EpollCreateFlags> for EpollCreateFlags

impl Sub<EfdFlags> for EfdFlags

impl Sub<MemFdCreateFlag> for MemFdCreateFlag

impl Sub<ProtFlags> for ProtFlags

impl Sub<MapFlags> for MapFlags

impl Sub<MRemapFlags> for MRemapFlags

impl Sub<MsFlags> for MsFlags

impl Sub<MlockAllFlags> for MlockAllFlags

impl Sub<Persona> for Persona

impl Sub<Options> for Options

impl Sub<QuotaValidFlags> for QuotaValidFlags

impl Sub<SaFlags> for SaFlags

impl Sub<SfdFlags> for SfdFlags

impl Sub<SockFlag> for SockFlag

impl Sub<MsgFlags> for MsgFlags

impl Sub<SFlag> for SFlag

impl Sub<Mode> for Mode

impl Sub<FsFlags> for FsFlags

impl Sub<InputFlags> for InputFlags

impl Sub<OutputFlags> for OutputFlags

impl Sub<ControlFlags> for ControlFlags

impl Sub<LocalFlags> for LocalFlags

impl Sub<TimeSpec> for TimeSpec

impl Sub<TimeVal> for TimeVal

impl Sub<WaitPidFlag> for WaitPidFlag

impl Sub<AddWatchFlags> for AddWatchFlags

impl Sub<InitFlags> for InitFlags

impl Sub<TimerFlags> for TimerFlags

impl Sub<TimerSetTimeFlags> for TimerSetTimeFlags

impl Sub<AccessFlags> for AccessFlags

impl<'a, 'b, T: Clone + Integer> Sub<&'b Ratio<T>> for &'a Ratio<T>

impl<'a, 'b, T: Clone + Integer> Sub<&'b T> for &'a Ratio<T>

impl<'a, T> Sub<Ratio<T>> for &'a Ratio<T> where
    T: Clone + Integer

impl<'a, T> Sub<T> for &'a Ratio<T> where
    T: Clone + Integer

impl<'a, T> Sub<&'a Ratio<T>> for Ratio<T> where
    T: Clone + Integer

impl<'a, T> Sub<&'a T> for Ratio<T> where
    T: Clone + Integer

impl<T: Clone + Integer> Sub<Ratio<T>> for Ratio<T>

impl<T: Clone + Integer> Sub<T> for Ratio<T>

impl Sub<Transformations> for Transformations

impl<N: Sub<Output = N>> Sub<Point<N>> for Point<N>

impl<N: Sub<Output = N>> Sub<Vector<N>> for Vector<N>

impl<N: Sub<Output = N>> Sub<Vector<N>> for Point<N>

impl Sub<DndAction> for DndAction

impl Sub<Resize> for Resize

impl Sub<Transient> for Transient

impl Sub<Capability> for Capability

impl Sub<Mode> for Mode

impl Sub<ContentHint> for ContentHint

impl Sub<Anchor> for Anchor

impl Sub<Gravity> for Gravity

impl Sub<ConstraintAdjustment> for ConstraintAdjustment

impl Sub<Anchor> for Anchor

impl Sub<Flags> for Flags

impl Sub<Kind> for Kind

impl Sub<ConstraintAdjustment> for ConstraintAdjustment

impl Sub<ModifiersState> for ModifiersState